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152609795d
By using bitmaps we actually support whatever size we would want, but the console currently limits fonts to 64x128 (which gives 60x16 text on 4k screens), so we don't need more for now, and we can easily increase later. Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Helge Deller <deller@gmx.de>
157 lines
3.1 KiB
C
157 lines
3.1 KiB
C
/*
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* `Soft' font definitions
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*
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* Created 1995 by Geert Uytterhoeven
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* Rewritten 1998 by Martin Mares <mj@ucw.cz>
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*
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* 2001 - Documented with DocBook
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* - Brad Douglas <brad@neruo.com>
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*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file COPYING in the main directory of this archive
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* for more details.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/string.h>
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#if defined(__mc68000__)
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#include <asm/setup.h>
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#endif
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#include <linux/font.h>
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static const struct font_desc *fonts[] = {
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#ifdef CONFIG_FONT_8x8
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&font_vga_8x8,
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#endif
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#ifdef CONFIG_FONT_8x16
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&font_vga_8x16,
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#endif
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#ifdef CONFIG_FONT_6x11
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&font_vga_6x11,
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#endif
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#ifdef CONFIG_FONT_7x14
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&font_7x14,
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#endif
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#ifdef CONFIG_FONT_SUN8x16
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&font_sun_8x16,
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#endif
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#ifdef CONFIG_FONT_SUN12x22
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&font_sun_12x22,
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#endif
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#ifdef CONFIG_FONT_10x18
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&font_10x18,
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#endif
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#ifdef CONFIG_FONT_ACORN_8x8
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&font_acorn_8x8,
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#endif
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#ifdef CONFIG_FONT_PEARL_8x8
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&font_pearl_8x8,
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#endif
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#ifdef CONFIG_FONT_MINI_4x6
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&font_mini_4x6,
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#endif
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#ifdef CONFIG_FONT_6x10
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&font_6x10,
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#endif
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#ifdef CONFIG_FONT_TER16x32
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&font_ter_16x32,
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#endif
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#ifdef CONFIG_FONT_6x8
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&font_6x8,
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#endif
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};
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#define num_fonts ARRAY_SIZE(fonts)
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#ifdef NO_FONTS
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#error No fonts configured.
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#endif
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/**
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* find_font - find a font
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* @name: string name of a font
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*
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* Find a specified font with string name @name.
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*
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* Returns %NULL if no font found, or a pointer to the
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* specified font.
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*
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*/
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const struct font_desc *find_font(const char *name)
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{
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unsigned int i;
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BUILD_BUG_ON(!num_fonts);
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for (i = 0; i < num_fonts; i++)
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if (!strcmp(fonts[i]->name, name))
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return fonts[i];
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return NULL;
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}
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EXPORT_SYMBOL(find_font);
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/**
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* get_default_font - get default font
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* @xres: screen size of X
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* @yres: screen size of Y
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* @font_w: bit array of supported widths (1 - FB_MAX_BLIT_WIDTH)
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* @font_h: bit array of supported heights (1 - FB_MAX_BLIT_HEIGHT)
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*
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* Get the default font for a specified screen size.
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* Dimensions are in pixels.
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*
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* font_w or font_h being NULL means all values are supported.
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*
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* Returns %NULL if no font is found, or a pointer to the
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* chosen font.
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*
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*/
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const struct font_desc *get_default_font(int xres, int yres,
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unsigned long *font_w,
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unsigned long *font_h)
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{
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int i, c, cc, res;
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const struct font_desc *f, *g;
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g = NULL;
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cc = -10000;
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for (i = 0; i < num_fonts; i++) {
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f = fonts[i];
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c = f->pref;
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#if defined(__mc68000__)
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#ifdef CONFIG_FONT_PEARL_8x8
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if (MACH_IS_AMIGA && f->idx == PEARL8x8_IDX)
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c = 100;
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#endif
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#ifdef CONFIG_FONT_6x11
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if (MACH_IS_MAC && xres < 640 && f->idx == VGA6x11_IDX)
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c = 100;
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#endif
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#endif
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if ((yres < 400) == (f->height <= 8))
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c += 1000;
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/* prefer a bigger font for high resolution */
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res = (xres / f->width) * (yres / f->height) / 1000;
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if (res > 20)
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c += 20 - res;
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if ((!font_w || test_bit(f->width - 1, font_w)) &&
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(!font_h || test_bit(f->height - 1, font_h)))
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c += 1000;
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if (c > cc) {
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cc = c;
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g = f;
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}
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}
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return g;
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}
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EXPORT_SYMBOL(get_default_font);
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MODULE_AUTHOR("James Simmons <jsimmons@users.sf.net>");
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MODULE_DESCRIPTION("Console Fonts");
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MODULE_LICENSE("GPL");
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